55027831 has 8 divisors (see below), whose sum is σ = 56724624. Its totient is φ = 53350080.

The previous prime is 55027811. The next prime is 55027849. The reversal of 55027831 is 13872055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55027831 - 2⁹ = 55027319 is a prime.

It is a super-2 number, since 2×55027831² = 6056124369129122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55027793 and 55027802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55027811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221 + ... + 10561.

It is an arithmetic number, because the mean of its divisors is an integer number (7090578).

Almost surely, 2^55027831 is an apocalyptic number.

55027831 is a deficient number, since it is larger than the sum of its proper divisors (1696793).

55027831 is a wasteful number, since it uses less digits than its factorization.

55027831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9521.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 55027831 is about 7418.0746154241. The cubic root of 55027831 is about 380.3593806959.

Adding to 55027831 its reverse (13872055), we get a palindrome (68899886).

The spelling of 55027831 in words is "fifty-five million, twenty-seven thousand, eight hundred thirty-one".